Hi all,

I'm testing recon-all using bert with the intent of ensuring that freesurfer installation is good.

recon-all completes with a "finished without error" message, and the resulting surfaces and parcellations look sensible.  However, a couple of types of errors are showing up in the log whose significance I'd like to understand.

I have attached the recon-all log, and there are snippets below. The two types of error are:

1. mri_em_register: LINE SEARCH FAILED
-----------------------------------
I see that this has been reported to the list about a dozen times, and the reply usually is that this message is seen occasionally for unknown reasons, but it's not a concern. For me it pops up consistently for the bert sample data, multiple times per run.

In case someone wants to investigate, or interpret the error message, I found docs here:
http://www.dtcenter.org/com-GSI/users/docs/codeHTML/comGSIv2browser/html_code/subroutine/qnewton.f90.html

According to those docs, "INFO=3" means the function is complaining that it didn't converge within a specified number of iterations. Which doesn't sound desirable.

2. mris_sphere: distance error %100000.0
--------------------------------------
An error of 100,000% sounds like a problem.  :-(

I'd appreciate hearing what the thinking is on these problems.

Thanks,

-- Graham

Subject bert2 recon-all.log
============================
[Line 630 invoke]  mri_em_register -skull nu.mgz /aaa_bin/freesurfer53c6/freesurfer/average/RB_all_withskull_2008-03-26.gca transforms/talairach_with_skull.lta
...
[Line 746 error]  IFLAG= -1  LINE SEARCH FAILED. SEE DOCUMENTATION OF ROUTINE MCSRCH ERROR RETURN OF LINE SEARCH: INFO= 3 POSSIBLE CAUSES: FUNCTION OR GRADIENT ARE INCORRECT OR INCORRECT TOLERANCESoutof QuasiNewtonEMA: 009: -log(p) =   -0.0  tol 0.000010
[Similar errors also at: ] 778, 1010, 1042, 2328, 2360

===========================
[Line 3135 invoke]  mris_sphere -q -seed 1234 ../surf/lh.inflated.nofix ../surf/lh.qsphere.nofix
...
[Line 3232 error] distance error %100000.00
[Similar error at:] 4927
===========================

#------------------------------------------

Started at Wed May 29 03:18:17 PDT 2013
Ended   at Wed May 29 09:18:38 PDT 2013
#@#%# recon-all-run-time-hours 6.006
recon-all -s bert2 finished without error at Wed May 29 09:18:38 PDT 2013